Improvement in microscopes



1. J. BAU S CH.

Microscopes.

N0.15l,745. Patentedjune 9,1874.

Q N MMX INVENTOR UNITED STATES PATENT OEEIGE.

JOHN J. BAUSCH, OF ROCHESTER, NEW YORK.

IMPROVEMENT IN MICROSCOPES.

Specification forming part of Letters Patent No. 151,746, dated J une 9,1874; application May 11,1874.

To all 'whom it may concern:

Be it known that I, JOHN JACOB BAUscH, of the city of Rochester, countyof Monroe and State of New York, have invented certain Improvements inMicroscopes, of which the following is a specification:

The object of my invention is to produce a compact and portablemicroscope, which, by the construction and arrangement of certain partsthereof, is easily made ready for use, and which, when not in'use, canbe packed in suoha small compass that it can be conveniently carried inthe pocket, and is for this reason specially adapted to the purposes ofbotanists and other naturalists and investigators.

I attain these ends in a very simple manner, as follows: The case forcontaining the lenses and other parts of the microscope consists of asmall box, the lid of which slides into its place and is held by meansof the well-known contrivance known as tongue and `grooves, as isclearly shown in the drawings. rlhis lid is so formed that it slidesinto its place whichever side may be-up, and to it one of the ends ofthe box is strongly and permanently fastened. This end O serves tosupport in a rm manner the stem D, which carries the lenses 1 1, stageG, &c., and at the same time :its removal from the box allows the lightto fall freely on the mirror H.. The stem D is hinged at its lower end,so that it may be either laid down in the groove formed for it in thelid or held upright by being pressed into a groove in thebefore-mentioned end of the box, and in both these positions it isfirmly held in place by means of the button E, which acts as aneccentric clamp.

Vhen the microscope is required for use, the lid of the box is drawnout7 the steln l) turned up and fastened, the lenses, stage, duc.,arranged as shown in the drawing, and the box and lid are put togetheras there exhibited.

Vhen it i's desirable to pack the instrument away, the lenses, Ste., areslipped oif the stem and packed in the box. The stem itself is turneddown and held in the groove in the lid by means ofthe button E, afterwhich the lid, having first been turned over, may be slid into itsplace, so as to etfectually and neatly close both the top and the end ofthe box.

Dissecting-needles K and L are fitted into grooves formed in the lid,and having a shape which gives a cross-section that is a little morethan a semicircle. rllhis shape, while it allows the needles to slideinto place when moved endwise, prevents their being lifted out, and theyare thus securely held without increasing the size of the instrument,While at the same time they are in convenient position, and can beeasily drawn out for use.

Having thus described my invention, what I claim as new and desire tosecure b f Let- The combination of the box A with the re versible lid B,said lid having one end of the box secured to it at right angles andforming a support for the stem l), the whole being arranged in themanner and for the purpose substantially as described.

JOHN J. BAUSOH.

Titnesses HENRY J. LAMB, RUDOLPH Viiv.

